Hide product title and categories on product page
For compatibility with future updates of your theme and plugins, I've found a better way to do this is through WooCommerce hooks. To remove both the title and the meta-data items from your Single Product Page, you should put the following two lines in your theme's main functions.php:
remove_action( 'woocommerce_single_product_summary', 'woocommerce_template_single_title', 5 );remove_action( 'woocommerce_single_product_summary', 'woocommerce_template_single_meta', 40 );You can find more info about changing, or re-ordering your Product Page Contents in this post.
Simplest Solution is go to woocommerce plugin /templates/single-product/title.php and remove content of this file.
Same process can be done by removing content of meta file in same directory.